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Cancer Chemotherapy and Pharmacology
Erschienen in: Cancer Chemotherapy and Pharmacology 5/2009

01.04.2009 | Original Article

The polymorphisms of TS and MTHFR predict survival of gastric cancer patients treated with fluorouracil-based adjuvant chemotherapy in Chinese population

verfasst von: Zhao-Hui Huang, Dong Hua, Li-Hua Li

Erschienen in: Cancer Chemotherapy and Pharmacology | Ausgabe 5/2009

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Abstract

Purpose

The aim of this study was to investigate the association of the thymidylate synthase (TS) and methylenetetrahydrofolate reductase (MTHFR) polymorphisms with the clinical outcomes of gastric cancer patients treated with 5-FU-based adjuvant chemotherapy.

Methods

One-hundred and sixteen patients with gastric cancer were treated with 5-FU-based adjuvant chemotherapy. The TS (a 28-bp tandem repeat polymorphism in the TS enhancer region (TSER) and a 6 bp deletion/insertion polymorphism in the 3′-untranslated region) and MTHFR C677T polymorphisms were determined in blood samples from those patients using PCR and PCR-LDR (ligation detection reaction) method, respectively.

Results

The overall survival (OS) in patients with the TS ins6/ins6 genotype was significantly shorter than those in patients with the del6/del6 (P = 0.017) and ins6/del6 (P = 0.022) genotype. The relapse-free survival (RFS) and OS in patients with the MTHFR C/C genotype were significantly worse than those in patients with the T/T or C/T genotype (P = 0.043 and 0.040, respectively). Cox multivariate analysis also showed that patients with the TS ins6/ins6 genotype have worse OS than patients with the T/T or C/T genotype (HR = 2.437, P = 0.041), and the MTHFR C/C genotype was associated with shorter RFS (HR = 1.723, P = 0.031) and OS (HR = 1.681, P = 0.056). No significant association was found between the TSER polymorphism and the clinical outcomes (P > 0.05).

Conclusion

The polymorphisms of TS 3′-UTR ins6/del6 and MTHFR C677T appear to be potential prognostic factors in gastric cancer patients treated with 5-FU-based adjuvant chemotherapy, which may allow identification of gastric cancer patients who will benefit from 5-FU chemotherapy.
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Metadaten
Titel
The polymorphisms of TS and MTHFR predict survival of gastric cancer patients treated with fluorouracil-based adjuvant chemotherapy in Chinese population
verfasst von
Zhao-Hui Huang
Dong Hua
Li-Hua Li
Publikationsdatum
01.04.2009
Verlag
Springer-Verlag
Erschienen in
Cancer Chemotherapy and Pharmacology / Ausgabe 5/2009
Print ISSN: 0344-5704
Elektronische ISSN: 1432-0843
DOI
https://doi.org/10.1007/s00280-008-0815-6

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